Kris Roglieri's sentencing is pushed back again

By the time Kris Roglieri learns the number of years in prison he will serve, it will have been almost four months after he pleaded guilty in federal court to one count of Conspiracy to Commit Wire Fraud. This is according to court records that reveal that the Deputy Attorney General of the Justice Department, Todd Blanche, recently submitted a request to adjourn the sentencing until April 3rd. U.S. District Judge Mae A. D'Agostino granted the request shortly after.

A few questions I have (as a non-attorney):

1) Why is the Deputy Attorney General making this request, since I don't recall seeing him in court records before?

Is this because the dates have been postponed enough that a request from the federal prosecutor isn't enough, or is this standard operating procedure?

2) What does pushing back the sentencing by about 3 weeks change? Is it so that counsel can properly submit a sentencing memorandum?

Has there been something in the presentencing report that hasn't been resolved, for example, more information about missing money?

Does this have to do with the two co-conspirators, Chris Synder and Kimmy Owen (their sentencing dates are 4/16 &17, respectively)?

We shall see whether, as the sentencing date for Mr. Roglieri gets closer, any new key details are released that could help him with his sentencing or even those of his co-conspirators.